Ventilating attachment for heating-stoves



(No Model W. M. BRINKERHOFF.

VENTILATING ATTACHMENT FOR HEATING STOVES. No. 339,966.

Patented Apr. 13, 1886.

Q I IIITIIHIII:

UNITE TATES XVARREN M. BRINKERHOFF, OF AUBURN, NElV YORK.

VENTILATING ATTACHMENT FOR HEATlNG-STOVES.

SBECIEICATION forming part of Letters Patent No. 339,966. dated April13. 1886.

Application filed December 26, 1885. Serial No. 186,708.

To aZZ whom, it may concern:

Be it known that I, WARREN M. BRINKER- HOFF, of Auburn, in the county ofCayuga and State of New York, have invented certain new and usefulImprovements in Ventilating Attachments for Heating-Stoves, of which thefollowing is a specification.

My invention relates to apparatus for ventilating apartments,and thepurpose thereof is to provide simple, effectiveand comparativelyinexpensive devices, which, when combined with any ordinary heater, willcarry off the lower stratum of cold air lying near or upon the floor ofthe room and discharge the same into the smoke-pipe at such a point asto enable the latter to carry off the entering current withoutmaterially diminishing the draft.

It is especially the purpose of my invention to provide means for thepurpose described which may be applied to or combined with a stove orheater of any pattern without any material change or alteration to adaptit to the discharge of the special function mentioned.

My invention consists in the several novel features of construction andcombinations of parts hereinafter fully set forth, and specificallydefined in the claims annexed to this specification.

In the accompanying drawings, Figure 1 is a view, partly in sideelevation and partly in vertical section, illustrating my invention.

Fig. 2 is a vertical transverse section of the elbow shown in Fig. 1,taken at a point between the stove or heater and the upright portion ofthe pipe. Fig. 3 is a partial side elevation with the pipe in verticalsection, showtion a slightly-modified construction. Fig. 4 is a verticalsection upon the line 00 7, Fig. 3.

It is a fact of universal experience that in all apartments heated bystoves or heaters of any pattern a cold stratum of air is always to befound near or resting upon the floor. More over, as carbonic-acid gas isone of the products of combustion, and is given off largely byrespiration and by the exhalations of plants, and has at an ordinary lowtemperature a greater specific gravity than atmospheric air, this gaswill with others be found in all living apartments lying in largequantities within the lower and cooler air-strata next to the floor. Itis evident, therefore, that if this (No model.)

cooler stratum with the poisonous gas mingled with it can be drawn offin such manner as to permit the upper and warmerstrata to descend andoccupy its place, not only will the tem pcratnre of the room beequalized and the unhealthy gases removed, but by thus supplying a warmstratum of air next the floor, the consumption of fuel necessary torender the apartment comfortable may be decreased, and the health ofthehouse greatly promoted.

It is a further purpose of my invention to provide a construction whichshall effect the results proposed without materially obstructing thedraft by unduly occupying the draftspace, and wherein the air-duct bywhich the foul gases and cold air are removed, shall present the maximumsurface to the heated products of combustion passing from the stove,whereby an ascending current is established in the ventilating-pipe withthe minimum length ofair-duct.

lt is my object, also, to so arrange and combine the parts that theheated currents from the stove shall be swept against the exposedsurface of the air-duct, whereby the latter is rapidly heated and anascending current generated therein.

It is my purpose,also, to give such a relative arrangement to the elbowand the air-duct connected with it, that the two may be readily,permanently, and cheaply connected together to form an entirety, theconstruction being such that the union between the two shall not bedestroyed by burning out the fastenings which unite the air-duct and thewall of the elbow, a result to which the parts might be peculiarlyliable, owing to the excess of heat received by the wall of the air-pipeunder my arrangement.

The results I accomplish by theconstruction described, as follows:

In the annexed drawings, the reference-letter A designates a'stove orheater of any known pattern. This heater is connected with a smoke-flueby means of an elbow, d g, hav ing a form which is substantially thesame as that already in use.

In connection with the elbow d g,I place an air-duct, h, which may beformed in any desired manner, either integral with or joined to saidelbow, the preferred construction be- IOC ing that the duct follows thewall of the elbow, lies adjacent thereto, and issuitably connected withor attachedto said wall, with its lower end opening either within orwithout the wall of the heater, to which the elbow is applied. The ducth may be extended upward beyond the elbow, should this be necessary, inorder to give the ascending ai r-current sufficient heat to create aproper draft, and the point of discharge may be placed at any suitablepoint to effect this purpose. At its lower end the airduct hcommunicates with a vertical pipe-see tion, b, which may be eitherwithin or outside of the heater, its lower open end being brought withinsuch proximity to the floor that it will take up the cold air stratumlying upon or near the same.

It may in some instances be found desirable to place the ventilator-pipeI) either within or the air-duct 71, at its lower end 'to the open endof the elbow, where it may communicate with a pipe within the uptake of.the heater; or I may terminate said duct at one side of the elbowoutside the heaterfas in Fig. 3. In the latter case a veutilatingpipewill be necessary, but in the formerit may or may not be uquired,according to the construction of the "stove.

I may form the air-duct integral with the elbow, or I may construct itseparately and join it to the elbow; or I may otherwise form and unitethe two, myinvention being limited to no special form of constructing oruniting said parts.

In constructing the air-duct I may employ a pipe which is circular; butI prefer to so form it that it shall be elongated in crossscction-thatis to say, having two unequal diameters. By such construction I not onlyavoid any material obstruction of the draftspace, but I obtain a greatlyincreased heatingsurface, which is directly exposed to the heatedcurrents carried through the elbow.

A damper may be used in the air-duct in any way considered desirable. Inthe same manner either one or both arms of the elbow may be prolongedbeyond the dimensions shown or those usually employed, but withoutdeparting from my invention.

-What I claim is 1. The combination, with a stove and its smoke-pipe, ofan elbow interposed between the two,and provided with an air-ductfollowing the wall of said elbow and lying adjacent thereto, said ductcommunicating with the outer air at the end nearest the stove and at theother end discharging into the elbow or be smoke-pipe, substantially asdescribed.

2. The combination, with a stove and its smoke-pipe, of an elbowinterposed between the two, and provided with an air-duct following thewall of said elbow, the wall of the el- 6 bow forming one wall of saidduct, the latter communicating with the outer air at the end nearest thestove and at the other end discharging into the elbow or smoke-pipe,sub- 4. Thecombination, Wlth a stove, of an 01- 8 bow provided with anair-duct, which follows its wall and'is of unequal diameter incross-section, said duct communicating with the outer air at the endnearest the stove, and at the other end discharging into the elbow orsmoke- 8 3- pipe communicating therewith, substantially as described.

5. The combination, with a. stove and its smokepipe, of an elbowinterposed between the two, said elbow being provided with an 0 air-ductfollowing its wall and lying adjacent thereto, and communicating at theend nearest the stove with a ventilator-passage, which extends towardthe floor, and at the other end discharging into theelbow orsmoke-pipe,substantially as described.

6. The combination, with a stove and its,

smoke-pipe, of an elbow interposed between the two, said elbow having anair-duet following and lying adjacent to the wall thereof, and looconnnunicating with a ventilator -passage at the end nearest the stove,said ventilator-passage extending toward the floor at a point outsidethe heater, while the duct discharges into the elbow or the smoke-pipeconnected there-.

to, substantially as described.

7. As a new article of manufacture and'sale, an elbow for asmoke-pipe,having an air-duct which follows the wall of said elbow andis permanently connected therewith, said duct no having communication atthe end nearest the stove with the outer air and extending toward thedischarge end of the elbow, substantially as described.

WVARREN M. BRINKERHOFF. \Vitnesses FREDERICK I. ALLEN, GEORGE W. NELLIS.

